Cover for a computer mouse



In FIG. 1, the broken line showing of a portion of a pencil is for illustrative purposes only and forms no part of the claimed design. FIG. 1 is a front elevational view of the cover for a computer mouse showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a cover for a computer mouse, as shown and described. 